TANC1 (Tetratricopeptide Repeat, Ankyrin Repeat, and Coiled-Coil Containing 1): TANC1 is a protein involved in synaptic function and neural development. It plays a role in the formation and maintenance of synapses — the junctions through which neurons communicate. Dysfunctions in TANC1 may affect neural connectivity and have been studied in relation to neurodevelopmental disorders.